21513830

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{2267}}^1$

素因数の和:2360

約数の個数: 32

約数和(自身を含む): 42293664

約数和(自身を除く): 20779834

約数列:

[1, 2, 5, 10, 13, 26, 65, 73, 130, 146, 365, 730, 949, 1898, 2267, 4534, 4745, 9490, 11335, 22670, 29471, 58942, 147355, 165491, 294710, 330982, 827455, 1654910, 2151383, 4302766, 10756915, 21513830]

約数ペア:

[(1, 21513830), (2, 10756915), (5, 4302766), (10, 2151383), (13, 1654910), (26, 827455), (65, 330982), (73, 294710), (130, 165491), (146, 147355), (365, 58942), (730, 29471), (949, 22670), (1898, 11335), (2267, 9490), (4534, 4745)]